Polar has told me, more than once, that the soft strap must be washed from time to time - in the washing machine! Periodically I toss it in the washer with my bike clothes - and it always improves the performance. I just replaced the strap I from last year as the end of the thing where it hooks just came apart. As long as I wet the contacts on the strap I've not had a problem with it picking up my heart rate. I do have a bra that tends to push it out of the way though...I really need to replace that thing![]()



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I don't think I'd do that to a Garmin strap. Cripes, their cadence sensors aren't waterproof. 
I do wash the elastic strap once in a while.




